Mechanism for hoisting and transmitting freight



v .6 e .S w. .t w. h s 4 D Y. O R T A G .R U M R m v u o M 0 mMEGHANISMFOR HOISTING- AND TRANSMITTING FREIGHT, GOAL, ORE, &c.

No. 355,884. Patented Jan. 11., 1887.

WITNESSES.

Nv PETERS. Fhoko'lilhngmphar, Walhlngton. D. C.

(No Mdel.) 4 Sheets.;-Sheet' 2.

MURGATROYDL MEGHANISM FOR HOISTING AND TRANSMITTING FREIGHT, COAL, ORE,@w. No. 355,884. A Patented Jan. 11, 1-887.

WITNESSES A florneys NT PETERS, Phnwumogn hw. Washington ac.

(No Model.)

} F. MURGA'T-ROYD. MECHANISM FOR HOISTING AND TRANSMITTING FREIGHT,GOAL, ORE, 6m.

Patented; Jan. 11, 1 8 87.

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WITNESSES c/mamwg:

N4 PETERS. Phulo-lithogmphur. Wahlnglon. n. c.

(NO Model.) 4 sheets sh'eet 4. I. MURGATROYD.

MEGHANIS M FOR HOISTING AND TRANSMITTING FREIGHT, COAL; ORE, 6x0.N0.'855,884. Patented'Jan. 11, 1887.

WITNESSES l UNITED STATES FRANK MURGATROYD, OF CLEVELAND, OHIO.

MECHANiSM FOR HOISTING AND TRANSIVIITTING FREIGHT, COAL, ORES, &c.

SPECIFICATION forming part of Letters Patent No. 355,884, dated January11, 1887.

Application filed September 28, 1886. Serial No. 214,753. (No model.)

7 To all whom it may concern:

Be it known that I, FRANK MUReATRoYD, of Cleveland, in the county ofGuyahoga and State of Ohio, have invented certain new and usefulImprovements in Mechanism for Hoisting and Transmitting Freight, Coal,Ores, 850.; and I do hereby declare the following to be a full, clear,and exact description of theinvention, such as will enable othersskilled in the art to which it pertains to make and use the same.

My invention relates to improvements in mechanism for hoisting andtransmitting freight, coal, ores, 850., in which is employed an archedor double-inclined truss, as the case I may be, for supporting thetramway for the carrier passing over and down between sheaves at thehighest or central part of the truss, to

enable the cable to operate in both directions in drawing the carrierupgrade, while on the downgrade in either direction the carrier descendsby gravity, to the end that with such construction less slack cable ishad than where a continuous grade is had from one end of the truss tothe other, as heretofore used,and,consequently, having less slack cable,thereis less resistance offered to the carrier in its travel over thedowngrade. In order that with the least material practicable the trussmay be made to sustain its load and also resist lateral strain-such, forinstance, as caused by high winds, moving the truss laterally, &c.thetruss is made with three chords, two of which are arranged at the topand one below, with brace-rods, in the form of lattice-work, extendingfrom one chord to another, so that the entire structure, in transversesection, is in the form of an inverted hollow triangle. A boom isprovided at one end of the truss, that is hinged in such a manner thatit' may be.

tilted to an upright position, and when lowered to its normal positionmay be swung latorally 2. limited distance, in which latter position noobstruction is had to the carrier from the boom to the truss, or viceversa.

In the accompanying drawings, Figures 1, 2, and 3 are side elevations oftrusses respectively embodying my invention, the first being a trusswith a double incline, and having a supporting-tower and hoisting-enginelocated at the center thereof. The second shows an arched truss with thehoisting-engine at one end. The third shows a double-inclined truss withthe engine located at one end. Figs. at and 5 are elevations intransverse section of the truss, the one showing sheaves at the centerof the truss, over which the cable passes. Fig. 6 is a side elevation ofthe sheaves shown in Fig. 5. Figs. 7 and 8 are respectively a sideelevation and plan, illustrating more especially the manner of hingingthe boom. Fig. 9 is an end elevation showing the manner of arranging thecable and sheaves where the hoistingengine is located at the center ofthe truss. Fig. 10 is a plan of the sheaves shown in Fig. 6. Fig. 11shows details illustrating the parts shown in Figs. 7'and 8. 'Fig. 12 isa side elevation in section of the carrier, the one side plate beingremoved. Fig. 13 are enlarged views, in perspective and section, ofdetails of the carrier hereinafter described. Fig. 14. is an enlarged.end elevation of the carrier. Fig. 15 is aplan of a lever, d.

The truss, which may be of either of the varieties shown, respectively,in Figsl, 2, and 3, is constructed with three chords, the two chordsAbeing arranged at the top and separated, as shown, with a chord, 13,located at the bottom. (See Fig.- 4.) The upper chords may be of anydesired form in cross-section; but I prefer the wellknown tubularvariety shown. The lower chord, B, is preferably a metal plate setedgewise. Braces a and a 0011- meet the chords in the usual manner. Tothe lower edge of the plate are riveted angle irons b, and to the latteris riveted the plate B, the latter lying flatwise and the edges thereofforming tracks for the carrier-wheels. The plate B may be an ordinarychanneliron, made with depending ribs at the edges to stiffen the same,or may have angle-irons riveted thereto for the purpose. (See Fig. 5.)With this triangular form of truss great strength is had, not only tocarry the load, but to withstand lateral strains, and it is believedthat it can be built with less weight of material than any of the formsheretofore used.

In case the hoisting-engine is located atone end of the truss, as shownin Figs. 2 and 3, the cable may be carried over the top of the truss tothe center or highest point thereof,

where it passes over a sheave, C, and down be-. tween the sheaves a. Ifthe engine, is at the center, as shown in Fig. 1, the sheave O is turnedcrosswise, as shown in Fig. 9, and another sheave, '0, is placed inposition to pass the cable up outside of the truss, or far enoughlaterally to miss the carrier and bucket. The cable, after passingbetween the sheaves c,may lead in either direction, and is made to drawthe carrier up the inclines in either direction. The momentum of thecarrier will cause it to pass the apex, after which it descends by gravity down either incline.

From the fact that the cable is sustained by the sheaves at the centerof the truss,only half the length of slack cable is had to operateagainst the'descent of the carrier as would be bad if the incline werecontinued from one end of the truss to the other.

The carrier is substantially the same as shown and described in LettersPatent N 0. 279,264, granted to me June 12, 1883, but is modified, ashereinafter shown, to operate upgrade in either direction.

The arrangement of the boom E is believed to be novel, and is asfollows: A crossbar, F, is secured to two chords, A, and extends somedistance laterally for attachingthe guy-rod of the boom. To the centerof the cross-bar F is attached the upper end, of the casting G, thelower end of the latter being attached to the end of the chord B,usually by means of angleirons secured in the corners. A strong uprightpin or king-bolt, g, is secured in the upper end of the casting G, andon this pin is pivoted the strap H. This strap in turn is pivoted at hto the strap I, the axis of this joint extending laterally. The strap Iis attached to the top side of the boom. With this construction, bymeans 'of the hinge-joint at h, the boom may be tilted and brought to anupright position, out of the way, forinstance, of passing vessels, andby means of the strap H being pivoted on the pingthe boom may be swunglaterally. The trackplates B of the truss and boom abut together on acurved line, (see Fig. 11,) the axis of which is in line with the axisof the pin The boom is usually fifteen or twenty feet long, and byloosening one guy-rod F and tightening the other guy-rod the free end ofthe boom may be turned a foot or two in either direction to bring theend thereof more directly over the hatchway of the vessel. Such limitedlateral movement of the boom, however, causes so slight an angle at thejoint of the plates B that no obstruction is had to the carrier. inpassing this point.

Any towers, piers, frame-work, or structure, such as usually employed inthis class of work, may be had for supporting my improved truss andtracks, and mechanism for moving the truss laterally may be employed,the same as with other structures of this class.

The carrier, with wheels D for traveling on the track, is constructedwith side plates, D, through which studs pass, on which latter arepivoted the sheaves 02, three in number. On the outside studs arepivoted the levers d, arranged in pairs astride the respective sheaves,the projecting ends of each pair of levers being joined together or madeintegral, and terminating in a hook end, 01 for engaging, respectively,catches j of the movable block or stop J, the latter being movable alongthe track, and are secured, respectively,rat the hoisting and dumpingpoint. The levers d have, respectively, depending arms d to the lowerends of which are pivoted push-levers d, the latter lying in ahorizontal position and extending lengthwise of the carrier, the freeends of the two push-bars on the same side of the carrier presentingtoward each other. Castings K are secured on the inside of therespective plates D and facing each other. These castings have loops Kforming ways through which thefreeends ofthepush-barspassloosely, bymeans of which the push-bars are held substantially in a horizontalposition.

Broad vertical channels K are made on the inner faces of the castings K,and form seats for the blocks L, the latter fitting loosely, so thatthey may move in a vertical direction, each block having an elongatedhole, Z, through which the securing-bolt passes, the elongation beingsufficient to accommodate the limited vertical movement required. Whenthe blocks are elevated, they engage the inner ends of the levers d andtilt the latter, causing the hook ends d to be depressed, so as torelieve them from their engagement with the catches j.

The blocks J have inclines J for elevating the hook ends (1 as thelatter enter these blocks, some lost motion being allowed endwise, sothat the hooks can drop away from the catch. Thecable is arranged asshown in Fig. 12, passing down between two sheaves, d, the third sheaveserving only as a carrier for the cable when the load has passed thecentral point of the truss,when, of course, the cable leads over this(otherwise idle) sheave. The cable passes next under the sheave m of thehoisting-block M, thence up to a pin, N, where it is secured, the pin Npassing through holes in the side plates, D.

In operating the device, suppose a hook end, d engages the catch jlocated at the place where the elevating is done. Such engagement willhold the carrier from moving along the track, and the draft of the cablewill elevate the load. As the hoisting-block strikes the blocks L thelatter are elevated, and these blocks in turn tilt the levers df andrelease the hookv end d, after which, as the hoisting-block cannot bedrawn farther upward, the carrier is moved along the track. The tiltingof the levers d, as just described, thrusts the free end of thepush-bars (1 under the shoulders m of the hoisting-block, and holds itelevated until the dumping-point is reached, where the other hook end dis elevated, and .engages the other catch j located at this point, bymeans of which the push-bars are drawn from under the shoulders m, andthe load is allowed to descend as the cable is slacked off from the timethe carrier may be changed end for end on the track, and the cablepassed between the other sheaves d, extra holes at having been madethrough the plates D for changing the pin N, on which the cable isfastened.

What I claim is- I 1. In mechanism for hoisting and transmittingfreight, coal, ores, 860., a truss in crosssection made in the form ofan inverted hollow triangle, with three chords located, respectively, atthe angles, the lower chord carrying a track, on which the car orcarriage travels, substantially as set forth. I

2. The combination, with a truss triangular in cross-secti on andcarrying a track on which a carrier travels, said truss and track havingits highest point at the central portion thereof, of a cable foroperating the carrier,and sheaves located at the highest partof thetrack and arranged, substantially as described, for the passage of thecable, whereby the latter is made to operate the carrier from eitherdirection.

3. The'combination, with a truss triangular in crosssection and providedwith a track on which the carrier travels, of aboom pivoted to the endof the truss so as to swing laterally, and hinged so as to tilt to anupright position, the parts being arranged substantially as set forth. 7

4. The combination, with a truss and track attached for operating thecarrier, said track having a double incline descending toward therespective terminus, of a cable for operating the carrier, and sheavesarranged at the summit of the track for supporting the cable, ahdarranged, substantially as described, for drawing the carrier upgradefrom either direction.

5. The combination, with a double-inclined track, a carrier, and acablefor operating the latter from the summit of the track, of movable stopssecured to the track, respectively, at the desired hoisting and loweringpoint, substantially as set forth.

, In testimony whereof I sign this specification, in the presence of twowitnesses, this 17th day of September, 1886.

FRANK MURGATROYD.

Witnesses:

CHAS. H. DORER, .GEo. W. KING.

